Wireless-telephone apparatus.



B. V. DETZ.

WIRELESS TELEPHONE APPARATUS.

APPUCAUQN F1120 001.15. 1913.

1,214,655. Patented m1111917 I N VE NTOR @Mfg/eee, BY [i M MITY.v

WITNESSES:

B. V. EITZ. WIRELESS TELEPHONE APPARATUS.

* 4 APPLICATION FILED OCT. 15| |913. 1,214,655. Patented Feb. 6, 1917.

2 SHEETS-SHEET 2- HWS WITNESSES: INVENTOR ATTY narran sra'rns maaarortica. i

BURR V. DEITZ, OF SLINGERLANDS, NEW YORK.

WIRELESS-.TELEPHONE APPARATUS.

To all whom t may concern.'

Be it known that I, BURR V. DEITZ, a citizen of .the United States ofAmerica, residing at -Slingerlands, in the county of AAlbany and Stateof New York, have in: ventedl certain new and useful Improve- Iments inWireless-Telephone Apparatus, of

lforth and claimed. I accomplish these o,b.A

jects by means of the mechanism illustrated v in the accompanyingdrawings, in which:

Figure 1 is aplan. Fig. 2 is a side elevation. Fig. 3 is an endelevationpf my apparatus. ,'F1g. 4 1s a diagrammatic view of the Wiringtherein.

Similar letters and numbers 'refer to .similar parts throughouttheseveral views.

A' lfox, A, provided with cover, B, side pieces, C, and bottom, D,supports and contains in a compact compass all vof the apparatusnecessaryA for an efhcient wireless receiving apparatus.

On the cover, B, I mount the coil, 1, and the secondary coil, 2, adaptedto be reciprocated within coil, 1. The frame, F, carries thereciprocating Contact, 3the frame containing the wire, 4, leading toground, G. I also carry `on the cover, B, theswitches, M and O, and thedetectors, H and J, On the side of the box,- I arrange the switches, 7 8and 9, connected with the wiring in the box. The secondary coil, 2, isregulatedby a switch, 10, on the end thereof adapted to be connectedwiththev contacts, 11, which are respectively connected withv segments,of

the winding on-the secondary coil.

K,- represents the aerial from which the `current is led to theapparatus. l

The construction of my apparatus pro-1 -vides for conductingl from theaerial, K, a

high frequency alternating current, which passes through the wires, 17and 12, switch,

7, wire, 13, to condenser, 15, and coil,"14,` through the coil, 14, andthrough wire, 16, to coil, 1, and from coil,`1, through wires, 3 and 4,to ground, G. The wire, X, leads from the condenser to wire, 4, toground. Aning ductive high frequency current isproduced' 3 ISpecification of Letters Patent.

Patented Feb. 6, 1917.

Application led October 15, 1913. Serial No. 795,384.

in coil, 2, and passes from thence through wire, 22, to condenser, I),thence to wire, 23, to detector, H; through detector, H, wire, 30,switch, 8, wire, 21, to coil, 2.

The detector, H, is alvoltaic cell comprising three minerals, to wit:ore of copper or iron, zinkite, or red xid of zinc, with fused siliconinterposed between. The low voltage current formed in the detector willescape during the action of the high frequency ink ductive currentthrough the wire, 30, switch,l 8, wire, 21, coil, 2, wire 'leading'to'telephone,r T, to wire,v 23, at end, and back to detector,

H. There is thus delivered'to the telephone a direct current'which willrender. audible the Vimpulse of the high :frequency alternating currentreceived through the aeriall system. v v

The arrangement of the coils, l and 14, and condenser, 15, is such thatthey may be varied to make their circuit in resonance with thetransmitted wave. The means for l f performing this regulation is notthe subject of this invention, although it is illustrated, in Figs.1, 2and 4 and will be readily undering upon the position of ythe switch, 8(My the detectors, H and invention 'relates to a detector which isconstructed of three minerals and forms a voltaic cell, as hereinbeforestated, and which,

so far as I know, is new in the art. I am.

aware that chalcopyrite, iron pyrites,zink'- ite and silicon have eachbeen used in-del:

tectors heretofore, but never,'so far' as IA know, have they been usedtogether for the purpose of forming a detector by the formation of avoltaic cell inwhich two minerals,-chalcopyri,t,e andzinkite, areseparated by silicon for producingfa direct low voltage.

current which is capable of `operating'- an electromagnen'and' which isautomatically caused `to How'during'the iiow of high 'frequency curr'ent-through fthe I detector, and

".'whichceaseswto flow,jwhen,\ the l high freq ency current fceas'es vtoflow through they A 'detecten if' 5 I Vbelieve that the,I low',Y voltage'-directichur-` im is 'formed In the-detector, either'fbyj chemicalactionor otherwise", that the lw'- voltage current-fs of` av lowconstant 'value,::" l

because the, refsistai'iceA yof the l"silicon'jfformil'lgj an internal'high [resistance within the 'cell is only overcome by the'aerialkrcurrent, the,

direct current being allowed to oW during the flow of the aerialcurrent. I find` that any electrical aerial disturbances, such as aerialor static electricity, or electric Wave impulses, are reproduced veryaccurately by this detector. Each fluctuation or change of amperage ofthe high frequency current is reproduced in direct'current by thedetector, so that electric oscillatory currents carrying impressionsofthe human voice are clearly,

2. A .detector for Jwireless signals,ycom

prising the mineral-s zinkite, silicon and pyrites of any kind. y

3. A detector for Wireless signals, comprising a mass of zinc oXid heldirmly in a cup; a piece of chalcopyrite held firmly in another cup, withtheir rough surfaces eX- tendingl toward each other, the cups movableand adjustable, having la mass of silicon clamped betweenthe two. y

In testimony whereof I have alixed my signature in presence of tWoWitnesses.

BURR V. DEITZ.

Witnesses FREDERICK IV. CAMERON, BEULAH CARLE.

